Mechanical movement.



No. 883,024. PATBNTED MAR. 24, 1908.

G. A. HUMPBRT.

MECHANICAL MOVEMENT.

APPLIOATIONFILED MAY 1907.

ff l' 4 SHEETS-SHEET 1.

No. 883,024. PATENTED MAR. 24, 1908.

G. A. HUMPERT.

MECHANICAL MOVEMENT.

APPLIUATION FILED MAY 6. 1907.

Afro/mers 4 SHEETS-SHEET 2.

N 883 024. PTENTED MAR. 24 1908.

G. A. HUMPERT.

MECHANICAL MOVEMENT.

APPLIUATION FILED MAY e. 190'1,

4 SHEETS-*SHEET 3.

W/TNESSES /NVENTO/ No. 883,024. PATENTED MAR. 24, 1908.

G. A. HUMPERT. MECHANICAL MOVEMENT.

4 SHEETS-SHEET 4.

APPLICATION FILED MAY 6, 1907.

INVENTO? ywrd- `ATTORNEYS Fig. 2isanedge view' of tie saine; Figs. 3 to 50 nivots E and E are also connected with 'nient 'for transmitting a straight reciprocatinlg Inotion'o'niy du 'ing the forward stroke and H of any apgroved construction.

Pei

ENT onirica.

GEORGE A. HUMPER'I, OF PITTSFIELD, LLINOIS.

MECHANICAL' MOVEMENT.

Specification of Lettera Patent.

No. ossee/i.

Itatented March 24, i908.

Application lediay 6, 19497. Serial No. 372,237.

To all whom it may concern: j

Be it known. that Geenen A. HUMPnRr, i a citizen ol" the United States, and a .resident l of Pittstield, in the county of Pike and State of illinois, have invented 'new and lini proved. Mechanical Movement, of which the following is a full, clear, .andexaetdescrip-- tion. the object of the invention` to prf vide a i newa'nd improved. mechanical. movement, more especially designed. for converting re- I ciprocating motion into rotary motion or vice l versa, in such a manner that dead center positions are avoidedpand the motion during l the 'forward stroke or during the backward stroke or during bot-.li strokes, is even throughout. A

The invention consists of novel features and parts and combinations olz the saine,

`Wl1ich will be more fully described hereinah l ter and then )ointed out in the claims.' l A practical embodiment oi the invention .is represented in the accompanying drawings forming a part of this specification, in which similar characters ofvreierence indicate coi responding parte in allk the views. v I Figure l is a sectional. perspective view of i the imorovement inthe form of a single elea curved movementA darin tl'ieretnrn stroke;

1Q are diagrammatic views, illustrating varions positions assumed'byl the parts of the mechanical movement during a full forward' and ba'kw'ard stroke, and Fig. ll is a side elevation ofthe improvement arranged with two elements, for transmitting a straight even reciprocating motionfdnrine' both the fois/yard. and return stroke.

Als-illustrated in Figs. i and 2, the single lement is arranged as follows:

3. crank shaft is mounted to tum' in suitslile hearings on strains B and the crank arm C ofthe crank shaft A has its .wrist pin C pivotaily connected with the links D, D extending upwardly in opposite directions, and pivotally connected by pivots E and E with similar links D, D3 having a common pivot E2 held on thernain frame B. The

links and F connected with each other by a pivot G engaged' by a. reciprocating means The links l), D', D2 an D* are of equal lenfrth, and the length 'of a link corresponds to t le diameter l of the circlevtraversed by the center of the wrist pin C, that is, each link D, D, D2 or D3 is twice the size of the crank arin C.

The pivot E2 in vertical alineinent with the crank shaft A and the said pivot iig is a distance freni the center of the crank shaft A corresponding. to the length olf one of the links l), D, .D2 or D3. .llie links .if and. F are oi such lengths that when the element is in the position shown in li Y. l, and C is in Inost disto-nt alineinent with A and E2, a line be drawn through the centers oi? C', A and .E2

extending.upwards7 then l" and l?l being` j ined to E and E inust pivot with G at t .eir intersection ofthis line the saine dis tance above as E2 is above A; Or, in other Words, F and le" must be approximately one and tliirteeniifteenth times the length ol the diameter of the cranks circuit. Now', assuming that a rotary motion is given to the crank shaft A in the direction of the arrow of, then a reciprocating motion is given to the pivot CT and the reciprocating means in the direction of the arrow 7)', in such a manner that during the time the wrist pin C travels in the lower half of its circuit, that is7 from the point 5 by way of tl mints (i, '7 and S to the point l, tthe 'L iii-'ot G travels in a straight extending' through the points 5, '7, 8, i, as illustrated in Figs. S, 4i, 5, S) and 1). It will be' seen that the distances trav# elod by the wrist pin C from one point to the other corresponds to the distance of the travel of the pivot G to similar points in the straight line, that is, an oven, straight reciprocating movement is given tothe wrist pin (l during the travel. of the crank arm C in the lower half of its circuit. During the time the wrist pin C travels from the point l to the point 5 by way of kthe points 2, 3 and l in the upper half of the circle, the pivot G travels through the corresponding points i, 2, 3, 4, 5 arranged in a curve,ns plainly'indicatori in the upper end ol Figs. 5, o, 7, 8 and 9.' ln Figs. 3 to l()1 inclusive, the different positions ol the several parts of the mechanical move mentare indicated sothat the movement of the link mechanism described can be readily understood.

'Vhen it is desired to tiansi'nit an even, straight reciprocating movement during both the fon-.aard and the backward stroke,the two elements such as' descti'bed above are used, as illustrated in Fig'. 11'. In this case the two crank shafts A', fri.' are connected with each other by gear wheels l and l', to.

causi.l the crank shafts to run in unison but in opposite directions, as indicated by the arrows-r', 'lhc crank arms C2, C3 of the crank shafts A', 'A2 are-connected by' their wrist pins C4, C5 with two' link mechanisms J and J', similar to the one above described with reference to Figs. 1 and 10, that is, each link mechanism having the links D, D', D2, D and the links F, F' connected with each other` by corresponding pivots G', G2, as will be readily understood by reference to Fig. 11. The pivots G', G2 alternately engage the reciprocating means H' by retaining devices h, K', in the form of L-shaped arms engaged by s rings K2, and adapted to be engaged by fixe pins L, L' and L2 to trip the pivots G',

G? at-the end of the corresponding strokes of the reciprocating means l1'. Thus, when the device is running, the pivot G' during the travel of the wrist pin C4 through the points 1, 2, 3, 4 and 5, and during the travel of the wrist pinC5 through the points 1, 2, 3, f1 and 5, a traveling motion of the ivots G', G2 through thev curved and stra-ig 1t lines takes place, that is, the pivot pin G' is out of engagement with the reciprocating means H' and travels in a curve, while the pivot pin G2 is in engagement with the reciprocating means and pushes the reciprocating means in a straight line in the direction of the arrow d'. When the pivots G', G2 reach the end of the forward stroke in the direction of the arrow d then the pivot G' becomes connected with the reciprocating means H', while the pivot moves out of engagement with the reciprocating means l-l' and the pivot G now imparts a return stroke to the reciprocatin means H' by traveling in a straight line t irough the points 5, 6,7, 8, 1, While the other pivot Gi'l travels in a curved line through the points 5, 6, 7, 8, 1. f

From the foregoing it will be seen that by the arrangement described the reciprocating motion is converted into a rotary motion, or the rotary motion is converted into reciprocating motion, in such a manner that dead center positions are avoided, and the motion during the forward stroke or during the backward stroke or during both strokes is even throughout, and consequently a proper trans miss-ion of the power is had.

T he device may be used in various forms and hence I do not limit myself to any particular application of thedevice.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. A mechanical movement comprising a crank shaft, a rechace-ating member, and a link mechanism connecting the said reciprocating member with the crank arm of the said crank shaft, the link mechanism havin a fixed fulcrum located Tbetween the cran shaft and the connection with the reciprocating mein ber and the of the link mechanism being arranged to cause an even straight travel in one direction of the reciprocating member corresponding to and during onehalf revolution of the said crank shaftA 2. A mechanical movement comprising a crank shaft, a reciprocating member, and a link mechanism connecting the said reciprocating member with the crank arm of the said crank shaft, the link mechanism having a fixed fulcrum located between the crank shaft and the connection ,with the reciprocating member and the links of the link mechanism being arranged to cause an even straight travel in one direction of the reciprocating member corresponding to and during one-half revolution of the said crank shaft, the travel of the reciprocating member in the reverse direction being in a curve and irregular relative to the other half revolution of the crank shaft.

3. A mechanical movement comprising a reciprocating member, crank shafts geared together to run in opposite directions, link mechanisms independently comiected with the reciprocating member and with the crank arms of the crank shafts, each link mechanism having a fixed fulcrum, and means for throwing the link mechanisms alternately out of engagement with the said reciprocating member at the ends of the forward and backward strokes of the said rec ciprocating member.

4. `In a mechanical movement a crank shaft, a pair of links pivotally connected with the crank arm of thesaid crank shaft. a second pair of links having a common fixed pivot and pivotally connected with the said -rst pair of links, a third pair of links pivotally connected with the parts connecting the first and second pairs of links with each other, and a reciprocating member with which the pivot of the third pair of links engages.

5. In a mechanical movement a crank shaft, a pair of links pivotally connected with the crank arm of the said crankshaft, a second pair of links having a common fixed pivot and pivotally connected with the said first pair of links, the said links being alike in-` length, the latter corresponding to the diameter of the circle described by the said crank arm, and the said fixed pivot ofthe second pair of links being a distanceI from the center. of the crank shaft corresponding to the length of one of the said links, a third pair of links pivotally connected with the pivots connecting the first and second pairs of links with each other, and a reciprocating member with which the pivot of the third pair of links engages.

6. A mechanical ovement comprising crank shafts geared together to run in opposite directions, areciprocating cross head having retainers, means for tripping the same, and link mechanisms connected with the crank arms of the said crank shafts and i swinging on ahXed fillcrurn, the link mechanf' a fixed fulcrum, the link mechanisms alterv isms alternately en aging the retainers-` nately engaging the said retainers.

7. A mechanica movement comprisingl In testimony whereof` I have signed my crank shafts geared together and to run in name to this specication in the presence of opposite directions, 'a reciprocating crosstwo subscribing witnesses. v head, pivoted andspringepressed L-shaped I retainers on the cross-head, fixed stops GEORGE 'A' HUMPERT adapted to he engaged by said retainers, and Witnesses: link mechanisms connected with the crank S. L. MORGAN, 10 arms of, said crank shafts and swinging on Ross MATTHEWS. 

